VPS & Dedicated Servers (Hosting Control Center) Help

Testing Your Server for Open Relays

If your server has its mail relays open, your server might be used to send spam emails. If you're not sure if your relays are open, try both tests below. If your relays are open, you should use the instructions below to close them.

To Manually Test Your Server for Open Relays

From your local machine, run the following command through cmd (Windows®) or SSH (Mac and Linux):